论文标题
NLO的VH和VV产生的SMEFT研究的有效性
Validity of SMEFT studies of VH and VV Production at NLO
论文作者
论文摘要
$ w^{\ pm} h $，$ zh $，$ w^+w^ - $的生产和$ w^\ pm z $ z $ z $ pairs探测夸克，仪表玻色子和higgs boson的非标准模式相互作用。可以根据有效的田间理论（EFT）来参数化新的效果，在该理论（EFT）中，通过增加高尺度$λ$的力量来抑制的高维操作员，扩展了拉格朗日。我们研究了在全局拟合EFT系数中添加近阶QCD校正的重要性。量化了由于执行EFT有效性的不同方法，对拟合的数值含义得到了量化。我们特别注意拟合对$ 1/λ^2 $扩展的依赖性，因为在$ {\ cal {o}}}（1/λ^2）$和$ {\ cal {o}}}（1/λ^4）$之间计算的结果之间的差异可能会使Dimension-8效果的重要性可能使人相关。
The production of $W^{\pm}H$, $ZH$, $W^+W^-$, and $W^\pm Z$ pairs probes non-Standard-Model interactions of quarks, gauge bosons, and the Higgs boson. New effects can be parameterized in terms of an effective field theory (EFT) where the Lagrangian is expanded in terms of higher-dimension operators suppressed by increasing powers of a high scale $Λ$. We examine the importance of including next-to-leading-order QCD corrections in global fits to the coefficients of the EFT. The numerical implications on the fits due to different approaches to enforcing the validity of the EFT are quantified. We pay particular attention to the dependence of the fits on the expansion in $1/Λ^2$ since the differences between results calculated at ${\cal {O}}(1/Λ^2)$ and ${\cal{O}}(1/Λ^4)$ may give insight into the possible significance of dimension-8 effects.
